Trolley-head.



"0.693309. 5 Patented Feb. u, I902.

I u. A. PETRE.

TROLLEY HEAD.

(Application filed May 7, 1901;

(No Model.)

UNITED STATES OFFICE.

PArEfirT DOUGLAS A. PETRE, OF DULUTH, MINNESOTA, ASSIGNOR OF ONE-FOURTHI TO HANSEN SMITH, OF DULUTH, MINNESOTA.

TROLLEY-HEAD.

SPECIFICATION forming part Of Letters Patent No. 693,309, dated February11, 1902. Application filed May 7, 1901. Serial No. 59,171. (No model.)I

To aZZ whom it may concern:

Be it known that I, DOUGLAS A. PETRE, a citizen of the United States,residing at Du luth, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Trolley-Heads; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in trolley-heads, and moreparticularly to that class adapted to permit of the trolley-wheelclosely following the electric conductor without regard to the lateralmovement of the trolley-pole.

One object of the present invention is the provision of means adapted tobe interchangeably employed upon any of the trolley-poles now in use,whereby the trolley-wheel may have a lateral swing independent of saidpole.

It also has in view the production of such a trolley-head as will beadapted for use on all of the common forms of trolley-poles and soconstructed that the wheel carried thereby may have both a lateral and apartial rotary movement, thereby permitting said wheel to closely followthe trolley-wire around curves or at other points without regard to thelateral or twisting movement of the saidpole, the said movement of thetrolley-head being independent of the pole.

It further has as an object the production of a trolley-head whose wheelis free to closely follow the trolley wire and which carries means forremoving ice or other foreign mat ter from said wire.

With these and other objects in view it consists of certainconstructions, combinations, and arrangements of parts, as-will behereinafter more fullydescribed and claimed.

In the accompanying drawings, Figure 1 represents a view in sideelevation of a trolley-head embodying the features of the presentinvention. Fig. 2 represents a longitudinal central vertical section ofthe parts shown in Fig. 1 on line 2 2 thereof. Fig. 3 represents in sideelevation the laterally-swinging member with a slightly-modified form ofrotating member applied thereto, and Fig. 4

represents an enlarged detail view of the laterally-swinging member.

Referring to the drawings by numerals, 1 indicates any preferred form oftrolley-wheel journaled upon a suitable shaft, as 2, which findsbearings, as at 3 3, in the fork 4. On the inner faces of the arms offork 4 are secured in any preferred manner springs, as 5 5, which arepreferably apertured at their upper ends, as at 6 6, for permitting theshaft 2 to be passed therethrough, whereby said springs may pressagainst the wheel 1 and normally hold the same centrally of said fork 4,but permitting of lateral movement thereof. Upon the front face of fork4 are preferably formed integral or detachable lugs, as 7 7, the

upperends of which are adapted to carry a suitable pin, as 8, aboutwhich is pivotally secured the end 9 of an arm, as 10, the upper end ofwhich arm is provided with an integral or removably-affixed lug, 'as 11,whose outer face is concaved and preferably corrugated, as at 12,whereby in operation when swung to the position shown in full lines inFig. 1 it is adapted to remove ice or other foreign matter from thetrolley-wire and when swung downward to the position shown in dottedlines in Fig. 1 will be out ofoperation and will not interfere with theoperation of the other parts of the improved trolley-head.

Downwardly-exten'ding springs, as 13 13, are preferably removablysecured to the sides of fork 4 and may be of any preferred shape, size,or material. The sides of said fork 4 near the lower end thereof are cutaway, leaving opposite curved shoulders, as at 14-14, and a central flatextended portion, as 15, whose lower end is preferably curved, as seenin dot ted lines in Fig. 1, as at 16. A laterally-swinging member, as17,is adapted to be pivotally secured to'the lower end of fork-4. Theupper end of said member 17 is preferably bifurcated, and the ends ofthe arms thereof are preferably curved, as at18 18, to correspond withthe curve of shoulders 14. The arms of the bifurcated portion ofmember17 are adapted to be passed on either side of extension 16 and asuitable bolt, as 19, passed through the parts for pivotally securingthe same together, whereby said member 17 will be held normally in lineof fork 4by means of springs 13 13,

but may be pivoted laterally against their spring-pressure.

The lower end of member 17 is provided with an annular shoulder, as 20,leaving a downwardly-extending cylindrical portion, as 21, which inoperation is adapted to be held in the upper end of the central bore 23of lower member 22. For securing the extension 21 in position withinbore 23 is provided any suitable removable pin or lug, as 24:, the headof which is permitted to play in an elongated slot, as 25, in the wallof member 22, whereby member 17, and thereby wheel 1, is capable of apartial rotary movement. To govern this lug 24C in its play and tomaintain the parts in line normally, a spring-collar, as 26, is securedat the rear of member 22 and passes about said member, so that its freeends rest against lug and prevent any movement of the same, exceptagainst spring-pressure. It will bereadily seen that any form of springmay be used for governing the play of lug 24, as illustrated in Fig. 3,which in this instance assumes the form of oppositely-arranged spiralsprings, as 26 26, whose outer ends are pressed against the opposite endwalls of slot 25 and whose inner ends engage lug 24. The bore 23 at thelower end of member 22 is adapted to fit over and securely retain myimproved trolley-head upon the outer end of any of the common forms oftrolley-poles now in use. Of course any preferred auxiliary securingmeans may be employed for making firm the parts.

It is obvious that I may alter the minor details of construction andarrangement and the size and shape of parts without in the leastdeparting from the spirit and scope of the present invention, and withparticular reference to the means for securing springs 13 13 to fork 4it will be readily apparent that I may secure the same in any preferredmanner and preferably by means which will permit of their removal andrenewal--as, for instance, any convenient form of clamps or bolt orset-screws ordovetail or other grooves may be employed.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A trolley-head, comprising in its construction, means for supportinga trolleywheel, and means for permitting said wheel to follow itstrolley-wire, comprising an intermediate member forming an extension ofthe trolley-pole pivotally secured to the wheelsupporting means, springsgoverning said pivoted means and a swivel connection between saidintermediate member and the trolley-pole for permitting a partialrotation of said pivotal means about the longitudinal axis of thetrolley-pole, substantially as described.

2. A trolley-head, comprising in its construction a fork, an ice-removercarried by said fork, means for permitting said remover to follow atrolley-wire comprising a member pivoted to the said fork and swiveledto the trolley-pole so as to turn about the longitudinal axis of thepole, said member form ing an extension of said pole, the said forkbeing also adapted to carry a trolley-wheel, substantially as described.

The combination with a trolley-head, of means carried thereby forremoving ice from a trolley-wire, comprising lugs carried by the fork ofsaid head, an arm pivoted to said lugs, and a block or enlarged portionat the outer end of said arm provided with a coucaved,

corrugated face adapted to contact with said wire, when in operation,whereby said ice will be removed therefrom, and means for connecting thefork with the trolley-head so as to have a pivoted action and a swivelaction, the construction being such that when said block is thrown outof operation the said arm will be folded downward and lie longitudinallyof said head, substantially as described.

4. A trolley-head, comprising in its construction a fork for supportinga trolley-wheel, a wheel carried thereby, means for maintaining saidwheel normally centrally of the arms of said fork and at the same timepermitting a lateral movement of the wheel, and means for permitting thefork to have a lateral pivoted motion and a rotary movement about itslongitudinal axis, substantially as described.

5. A trolley-head comprising in its construction a trolley-wheel fork,provided with curved shoulders near its lower end, means for permittinglateral movement of said fork, comprising a bifurcated member pivoted tosaid fork, the upper ends of the arms of said bifurcated member beingcurved to register with the said curved shoulders, anddownwardly-extendin g springs secured to the sides of said fork andinclosing the sides of said bifurcated member,whereby the same will. beheld normally in line with said fork, but may be moved laterally againstthe pressure of said downwardly extending springs, and means forpermitting a rotary movement of said fork, substantially as described.

6. A trolley-head, comprising in its construction a trolley-wheel fork,means for permitting a lateral movement of said fork, comprising apivoted member secured to said fork, and means for permitting a partialrotary movement of said fork,com prising a tube fitted over the lowerend of said pivoted member, a spring-controlled lug secured to the lowerend of said pivoted member and playing in a slot in the wall of saidtube, and means for securing said head to a trolleypole, substantiallyas described.

7. A trolley-head, comprising in its construction a trolley-wheel fork,means for permitting a lateral movement of said fork, comprising apivoted member secured thereto,and means for permitting a rotarymovement of said fork, comprising a tube adapted to surround the upperend of a trolley-pole and to have its upper end passed over the lowerend of said pivoted member, thesaid tube being ing, said pivoted memberand fork in line, 10 formed with an elongated slot in its wall, asubstantially-as described.

lug secured to the lower end of said pivoted In testimony whereof Ihereunto affix my member and extending through said slot, and signaturein presence of two Witnesses.

a sleeve-spring secured to said tube and passingaboutthesameandhavingits ends pressed DOUGLAS PETRE against theoppositeksides of said 1ug,whereby Witnesses:

said tube and pivoted member will be nor- JAMES T. WATSON,

mally in line, and means for normally hold- JOHN J. KUSEt

